package com.item.mofan.fliter;

import com.alibaba.fastjson.JSON;
import com.item.mofan.common.BaseContext;
import com.item.mofan.common.Result;

import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Slf4j
@WebFilter(filterName = "LoginCheckFilter",urlPatterns = "/*")
public class LoginCheckFilter implements Filter {
    private static  final AntPathMatcher PATH_MATCHER=new AntPathMatcher();
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request=(HttpServletRequest) servletRequest;
        HttpServletResponse response =(HttpServletResponse) servletResponse;

        String requestURI=request.getRequestURI();

        String[] urls=new String[]{"/employee/login","/employee/logout","/backend/**","/front/**","common/**",
                                   "/user/sendMsg","/user/login"};

        boolean check = check(urls, requestURI);

        if (check){
            filterChain.doFilter(request,response);
            return;
        }
        if (request.getSession().getAttribute("employee")!=null){
            Long empId= (Long) request.getSession().getAttribute("employee");
            BaseContext baseContext=new BaseContext();
            baseContext.setCurrentId(empId);
            filterChain.doFilter(request,response);
            return;
        }
        if (request.getSession().getAttribute("user")!=null){
            Long userId= (Long) request.getSession().getAttribute("user");
            BaseContext baseContext=new BaseContext();
            baseContext.setCurrentId(userId);
            filterChain.doFilter(request,response);
            return;
        }
        response.getWriter().write(JSON.toJSONString(Result.error("NOTLOGIN")));
    }
    public boolean check(String[] urls,String requestURI){
        for (String url:urls){
            boolean match = PATH_MATCHER.match(url, requestURI);
            if (match){
                return true;
            }
        }
        return false;
    }
}
